Cast
- Percy as Scooby Doo
- Thomas as Shaggy Rogers
- Henry as Fred Jones
- Emily as Daphne Blake
- Rosie as Velma Dinkley
- Mavis as Marcy (Velma's Cousin)
- Diesel as The Ancient One
- Diesel 10 as The 30 Foot Shaggy (both are big, strong, powerful, and scary)
- Spencer as Elliot Blender (both were mean, but later good)
- Murdoch as Melbourne O'Reilly
- Hiro as J.J. Hakimoto
- Whiff as Gibbi Norton
- Bertie as Burr Batson
- Skarloey as Professor Laslow Ostwald
- Lillie Lightship (from TUGS), Molly, and Lady as The Hex Girls
- Harvey as Mr. B
- Donald as Crawdad Mike
- Douglas as Crawdad Mike's Bus Driver
- Duncan as Eddie (Roller Ghoster Ride)
- Sir Handel as Professor Pomfrit
- Duke as Zelig
- Boco as Taylor Leland
- Salty as Cyrus T. Buford